I got did a double-check on your dates. One possibility (if driving up?); hitting one of the 'car free' days at Crater Lake on your way up or back down:
Vehicle Free Days on East Rim Drive - Crater Lake National Park (U.S. National Park Service)
...and of course do other Bend stuff of another day or so. I'm trying to be there for the 27th.
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"The older you do get, the more rules they're gonna try to get you to follow. You just gotta keep livin', man, L-I-V-I-N." - Wooderson
'14 carbon Synapse - '12 CAAD 10 5 - '99 Gary Fisher Big Sur